Radioactivity can be detected by use of:

by

A. Calorimeter
B. Palometer
C. Geiger counter
D. None of these

  1. A Geiger counter is a device that detects and measures radiation by counting the particles emitted from radioactive materials.
  2. It uses a Geiger-Müller tube filled with gas that becomes electrically charged when radiation passes through, creating a signal the device registers.
  3. Geiger counters are commonly used for safety checks in nuclear plants, medical facilities, and environmental monitoring to detect harmful radiation levels.